UT 18/UT 8 reconstruction begins next week in St. George

[Kniwt]

In addition to the widening, through traffic on southbound UT 18 (Bluff Street) will now be required to make a left turn to continue south.



http://www.stgeorgeutah.com/news/archive/2018/01/04/work-on-bluff-street-project-to-commence-next-week/

The Bluff Street project is slated to last a year and will widen the roadway between 100 South and Sunset Boulevard to three lanes in both directions, and revamp the Bluff Street-Sunset Boulevard intersection, among other improvements and upgrades.

... Bluff Street carries over 44,000 vehicles every day, with that number expected to climb to 65,000 by 2040 as the population climbs from over 150,000 to around 321,000.

[US 89]

They’re basically straightening out US 91! 

Also, didn’t the original plan put an interchange there?

[Kniwt]

Also, didn't the original plan put an interchange there?

Yes:
http://www.thespectrum.com/story/news/2017/12/29/5-southern-utah-road-projects-watch-2018/991030001/

Previous plans for a large "flyover"  bridge and other changes have been dropped in favor of a smaller project that amounts to more of a realignment of the existing ground-level intersection than a complete overhaul.

[Kniwt]

Short explainer video from Dixie State University:

https://www.youtube.com/watch?v=KfadfZEBgZM